Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum > YJ Exhaust upgrade

Join Wrangler Forum Today


Thread: YJ Exhaust upgrade Reply to Thread
Title:
  
Message:
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
09-25-2013 08:12 PM
Meshugga I put a stock cat and muffler on mine because I couldn't afford performance a couple of months ago. To me it sounds plenty loud and if it were any louder it would be annoying. It still drowns out any video I take. I have a 4.2 though and I'm not sure the difference in the 4.2 and 4.0 volumes.
09-25-2013 07:57 PM
Michigan jeeper I did a flowmaster 40 series on mine with duels it sounds pretty good! I get lots of compliments on it it also has no cat here's a link to a video sounds better now that it's broke in http://m.youtube.com/watch?v=ij5EYbIskJM
09-25-2013 05:11 PM
The Silver Gorilla I'm going to delete my cat and straight pipe it with a cherry bomb glass pack.
09-25-2013 04:58 PM
OhioLugg We just did a YJ 2.5 and deleted cat. The flange at the head pipe has enough rotation that it will tighten down and seal away from the front driveshaft properly. I replaced the head pipe, took a straight piece of 2.25 pipe to a flow-master super 44. In reading the threads fm super 44 highly recommended. Also was shared many times it sounds best with at least 1.5 ft of tailpipe. Sooo New head pipe, str8 pipe, fm super 44, and stock tailpipe. I bought the head pipe and tailpipe, ordered the fm to fit and no adapters!! yay! Sounds great, deep tone, not ricey, no fumes in jeep, kind of loud for my tastes but the boy loves it.
04-17-2013 11:19 AM
spyder98
Quote:
Originally Posted by CCFD View Post
Hey y'all, the bracket for the old stock exhaust on my 94 YJ broke awhile back and the pipes rubbed against the drive shaft causing holes, and abrasions on the drive shaft. So I will be replacing the old exhaust and manifold(has a small crack just before the coupling) and was wondering if anyone had any advice as far as which one to get. I am looking to boost my performance as well as mileage without going too expensive. Where the vehicle is registered it is a non emissions county so I will not be running a cat. Thank you and remember to Keep Calm, Jeep On!!!!

This is my plan for my exhaust maybe you will like it for your jeep. Ill be getting a new exhaust manifold with the (spring looking things). Get a TJ down pipe routed in front of my oil pan have my cat welded to the pipe then getting a flow master super 40 and have it dump down before reaching the rear axle.
04-16-2013 08:52 PM
Grizzlycb Just another heads up when you replace your manifold be sure to do it from above and unhook your intake also. Your gasket covers the intake also. I ended up taking it out from the bottom and all which was a pain anyways having to disconnect the driveshaft and motor mount. Just to slide the new one in. Then I cut the gasket to make it easier to slide in but once I put it back together and started it.., it held wide open. Found out it was getting too much air so you have to remove the fuel rail on top and all that to go about it. Just trying to save you some trouble I had. Lol
04-16-2013 08:43 PM
Grizzlycb I put a pace setter header on mine and then cut the cat and ran a straight pipe to a flow master super 44 series muffler and I love it. It sounds awesome
04-16-2013 07:34 PM
173ABN VN I put a longblock 2.5 in mine ,the old manifold was cracked so I put a header on it.It came w/that piece of pipe that bolted right up to my old cat...russ
04-16-2013 04:14 PM
gunslinger24 Banks!! I cheaped out and did a magnaflow exhaust. It's a little loud for my taste. A friend had a flow master 40 on his and was a bit nicer than mine.
04-16-2013 04:05 PM
sevenservices no advice, but I can tell you one thing...

When my connection came loose at the pipe to manifold spot (where the donut gasket is) it caused my pipe to swing over and rub the front shaft.

Upon tightening up the donut there at the back of the manifold, I how have a ton of clearance again without any chance of rubbing.

Any chance to weld the small crack, tighten 'er down and be done super easy? Just thinkin...
04-16-2013 12:22 PM
frayedknot Get one of the exhaust manifolds with the stress relief (springy looking thing) on the pipe. If you omit the cat, the fumes will stink as you drive around with the back open. Route the end of the exhaust toward the drivers side to help with that, but I would keep the cat for that purpose
04-14-2013 10:25 PM
CCFD
YJ Exhaust upgrade

Hey y'all, the bracket for the old stock exhaust on my 94 YJ broke awhile back and the pipes rubbed against the drive shaft causing holes, and abrasions on the drive shaft. So I will be replacing the old exhaust and manifold(has a small crack just before the coupling) and was wondering if anyone had any advice as far as which one to get. I am looking to boost my performance as well as mileage without going too expensive. Where the vehicle is registered it is a non emissions county so I will not be running a cat. Thank you and remember to Keep Calm, Jeep On!!!!

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -5. The time now is 11:12 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC